A nation united can reduce carbon emissions [Letter]

Your editorial on the EPA carbon rules reminding readers that they are a proven commodity and already have worked to lower emissions in the Northeastern states was excellent ("Carbon rules can work," June 2).

We're delighted that the rest of the country will finally be working with us to lower our nation's emissions. It will be wonderful that we no longer have to sue Western states for inundating us with their harmful emissions.

Last month, the Obama administration announced tougher Clean Air Act rules intended to reduce ground-level ozone, the chief component of the smog that plagues the Baltimore-Washington area and much of the nation. With at least half the pollution blowing into Maryland from the burning of fossil...

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Last week, the U.S. Environmental Protection Agency took the first step toward reducing greenhouse gas emissions from airplanes. The rule-making process will take months if not years, but the lingering question is, how will the proposed regulations fit with what other countries are doing about...